842477 has 2 divisors, whose sum is σ = 842478. Its totient is φ = 842476.

The previous prime is 842473. The next prime is 842483. The reversal of 842477 is 774248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 687241 + 155236 = 829^2 + 394^2 .

It is a cyclic number.

It is not a de Polignac number, because 842477 - 2² = 842473 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 842477.

It is not a weakly prime, because it can be changed into another prime (842473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421238 + 421239.

It is an arithmetic number, because the mean of its divisors is an integer number (421239).

2⁸⁴²⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

842477 is a deficient number, since it is larger than the sum of its proper divisors (1).

842477 is an equidigital number, since it uses as much as digits as its factorization.

842477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12544, while the sum is 32.

The square root of 842477 is about 917.8654585504. The cubic root of 842477 is about 94.4465324670.

The spelling of 842477 in words is "eight hundred forty-two thousand, four hundred seventy-seven".